class Acceleration(object):
	def __init__(self, data, a=[], *arguments, **keywords):
		self.data = data
		if len(a) != self.data.settings.dimensions:
			self.a = []
			for i in range(0, self.data.settings.dimensions):
				self.a.append(0.0)
			del i
		else:
			self.a = a
	
	def __repr__(self):
		return "{Acceleration: {a: %s}}" % (self.a)
